[clang] [CLANG] Fixes the crash on the use of nested requirements in require expressions (PR #169876)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- clang/test/SemaCXX/requires-nested-non-constant.cpp clang/lib/Sema/SemaExprCXX.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/SemaExprCXX.cpp b/clang/lib/Sema/SemaExprCXX.cpp
index c8c36fce8..490ce09e7 100644
--- a/clang/lib/Sema/SemaExprCXX.cpp
+++ b/clang/lib/Sema/SemaExprCXX.cpp
@@ -7930,7 +7930,7 @@ Sema::BuildNestedRequirement(Expr *Constraint) {
       return nullptr;
     }
   }
-    ConstraintSatisfaction Satisfaction;
+  ConstraintSatisfaction Satisfaction;
   if (!Constraint->isInstantiationDependent() &&
       CheckConstraintSatisfaction(nullptr, AssociatedConstraint(Constraint),
                                   /*TemplateArgs=*/{},

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https://github.com/llvm/llvm-project/pull/169876